MARINE GAMMARIDEAN AMPHIPODA 207 



Dogielinotidae 



Figure 86 



Diagnosis. — Accessory flagellum absent; epistome with a pendant 

 lobe; mandible lacking palp; palp of maxilla 1 vestigial; uropod 3 

 uniramous or lacking a ramus; telson broad, cleft shortly; antennae 

 and pereopods densely spinose and setose (fossorial). See Talitroidea, 

 Haustoriidae, Kuriidae, Phliantidae. 



Description. — Accessory flagellum absent; body not carinate or 

 toothed; rostrum small; coxae of medium length; mandible lacking 

 palp, molar large, triturative; palp of maxilla 1 vestigial, 1-articulate; 

 gnathopods of medium size, subchelate; uropod 3 uniramous or ramus 

 absent, ramus small, bearing apical setae; telson short, broad, shortly 

 cleft; antennae and pereopods densely spinose as in phoxocephalids 

 and haustoriids. 



Relationship. — This remarkable family combines characters of 

 Talitroidea and Phoxocephalidae-Haustoriidae. Its two species have 

 these characters of Talitroidea: no accessory flagellum; uniramous 

 [or aramous] third uropod; the telson of a Hyale; no mandibular palp; 

 and a vestigial first maxUlary palp. Dogielinotids have these characters 

 of the Phoxocephalidae-Haustoriidae: shape of head and rostrum; 

 short, very spinose antennae; similar gnathopods and pereopods; long 

 peduncular setae of the first and second uropods; and the strong tooth 

 at the postero ventral corner of the third pleonal epimeron. 



Metoediceros Schellenberg (1931), now assigned erroneously to 

 Oedicerotidae probably should form the type of a new family with 

 resemblance to Dogielinotidae (see Incertae Sedis). Metoediceros 

 differs from dogielinotids in its circular, uncleft telson. Its epistome 

 is unknown. 



Dogielinotids are distinguished from Talitroidea by their phoxo- 

 cephalid characters and vice-versa, and from the Haustoriidae by the 

 uniramous uropod 3 and the absence of a mandibular palp. 



The Kuriidae have coalesced urosomal segments. 



The Prophliantidae and Phliantidae have evanescent mandibular 

 molars. 



Key to the Genera of Dogielinotidae 



1. Uropod 3 with one ramus Dogielinotus 



Uropod 3 lacking rami Haustorioides 



